Sliding window



Jan. 19, 1943. w. H. R sEwARNE 2,303,395

SLIDING wnmow v Filed July 19, 1340 2 Sheets-Sheet l I 1 1 a f f if I A {W INVENTOR. 9% pasewarwe BY l 1 I 00114;: ATTORNEY.

Jan M 9 12,43. w. H. ROSEWARNE 2,3@889 SLIDING WINDOW Filed July 19, 1940 2 Sheets-Shea; 2

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Patented Jan. 19, 1943 UNITED STATES PATENT QFFICE.

SLIDINGLWINDOW William H. Rosewarne, Detroit, Mich.

Application July 19, 1940, Serial No. 346,411

2 Claims.

This invention relates to windows of the type embodying vertically slidable sash and has forits primary object to provide a window of this type having yieldingly supported jamb means capable of holding the sash in different positions of adjustment without requiring counterbalance means and which also enables quick and easy removal of the sash from the Window frame.

More specifically, the main object is to provide a window assembly embodying sub-jambs yieldingly supported in spaced relation to the main jambs and embodying guide means for retaining the sash therebetween. The guide means is designed to enable free sliding movement of the sash, but with sufficient friction to maintain the sash in elevated positions, and are also designed to enable disengagement of the sash therewith. I

Another object is to provide sub-jamb members of the character above mentioned having metal facings which protect the same against damage and present a permanent smooth surface for engagement with the sash. In this respect the facings are preformed of sheet metal and are generally of channel shape. One of the sides of the channel has a retaining lip which fits within a groove in a side of the sub-jamb, and the other side of the channel has an indented portion adapted to engage in a groove in the other side of the sub-jamb member. The lip is first inserted in its groove and the facing is then sprung over the sub-jamb and the indented portion snaps into its groove, thereby retaining the facing in place without the use of securing members such as nails or screws.

Another object is to provide an improved spring mean for yieldingly supporting the subjambs spaced from the main jambs of the window assembly. The amount of spring pressure required will, of course, vary according to the weight of the sash, and in this respect the invention provides springs which may be quickly and easily placed in the frame prior to assembly of the sub-jambs, without the use of separate securing means. The number of springs is increased or decreased according to the pressure required.

Other objects and advantages will become more fully apparent as reference is made to the accompanying drawings wherein my invention is illustrated, and in which Fig. 1 is an elevation of a window, with the inside stop removed,

Figs. 2 and 3 are cross sections taken on planes indicatedrby lines 22 and 33, respectvely, of Fig. 1,

Fig. 4 is a fragmental, staggered, cross sectional elevation, and

Fig. 5 is an elevation of one of the springs used in the window assembly.

More specifically, i designates an upper sash and 2 a lower sash of a vertically slidable window assembly. vertical sliding movement by sub-jamb members 3 which are retained with respect to the main jamb members 4 by screws 5, and which are yieldingly supported in spaced relation to the main jamb members by springs ii in such manner that they exert compressive forces against opposite side of the sash.

The sub-jamb members 3 are provided with metal facings 1 having vertically extending guide portions 8 and 9 which fit in grooves I0 in opposite vertical sides of the upper and lower sash members respectively. The guide portions 8 constitute rib formations of smooth, rounded contour as viewed in cross section in order to provide for free vertical movement of the sash, and also in order that by compressing the springs and separating the sub-jamb members the sash may be easily removed from the window.

The height of the raised guide portions is so proportioned with respect to the spaces between the sub-jambs and main jambs that by moving the sash clear of both the head and sill of the window frame, and then grasping the sash at top and bottom, near one side thereof, pulling of the sash causes retraction of both sub-jambs and enables removal of the sash.

The metal facing l on the sub-jambs is preferably pre-formed in what might generally be termed a channel shape so as to fit over the outside face and also the two side edges of the subjamb. One of the sides of this channel is formed with an inwardly directed lip II which fits in a preformed groove 12 in the jamb, and the other side has an indented portion it which engages in a groove la in the sub-jamb. In assembling the pro-formed facing the tongue formation II is first inserted in the groove l2, and then the facing is sprung over the sub-jamb so that the indented portion 13 snaps into the groove l4.

The screws 5 which are employed to retain the sub-jambs with respect to the main jambs 4 are more clearly shown in Fig. 4. The heads [5 of the screws are disposed in metal lined recesses H5 in the sub-jambs, and as a result of the pressure of the springs 6 the heads act to restrict The sash I and 2 are supported for separation of the sub-iambs from the main jambs when the sash are removed. These screws provide a convenient means for adjusting the sub-jambs relative to the main jambs and to space them as required.

The springs 6, as may better be seen in Figs. 4 and 5, are of what might be termed double hairpin shape. That is, the springs are comprised of a pair of V-shaped arms I! and I8 and a pair of V-shaped arms I9 and 20. The arms 18 and 20 are integrally connected by a transverse portion 2|, and as may be seen in Fig. 5, the arms I! and I9 are so arranged that they normally diverge toward their free ends.

The springs 6 are retained in the frame prior to assembly of the sub-jambs 3 therein by inserting their free arms I! and IS in sets of grooves 22. The grooves 22 are so spaced that insertion of the arms I! and I9 therein requires compression thereof from the full line position shown in Fig. to the position shown in broken lines. Such compression of the arms induces sufficient friction to hold the springs in place prior to assembly of the sub-jambs. The number of springs will vary, of course, according to the Weight of the sash, and in each case a number of springs will be provided which will exert sufficient pressure to maintain the sash in any position of adjustment.

It is preferred that the sub-jambs 3 also be grooved for the reception of the springs. Such grooves are indicated at 23, and as shown, are formed of greater width than the spacing of the arms l8 and 2%! so that the springs offer no interference to correct positioning of the sub-jambs.

The window frame embodies an outside stop 24 at both sides thereof and an outside stop 25 at the head. These stops make it impossible to remove the sash outwardly. The inside stop has been removed from Fig, 1 in order to expose the springs, and appears only at the right hand side of Fig. 2, As there shown the inside stop 26 is of a height such that it does not interfere with removal of the sash inwardly of the window.

. When the sash are in their closed positions a parting stop 2! in the head of the frame prevents inward movement of the sash, and a sill member 23 prevents inward movement of the bottom of the lower sash. The meeting rail assembly is not shown here, but it will readily be understood that the usual locln'ng means will be provided thereon, and that when the sash are locked their removal will be impossible.

As may be seen in Fig. 2, the screws 5 are centrally disposed in a plane midway between the side edges of the sub-jamb members, and a vertical series of springs 5 is arranged on each side of this plane. This arrangement enables a slight tilting of the sub-jambs to take place so that if one sash happened to be a slight amount larger than the other both sash will still have equal spring pressure exerted thereagainst.

Although a specific embodiment of the invention has been illustrated and described it will be understood that various changes may be made within the scope of the appended claims without departing from the spirit of the invention, and such changes are contemplated.

What is claimed is:

1. A jamb structure comprising a main jamb and a removable sub-jamb assembly for placement between a vertically slidable window sash and said main jamb. said sub-jamb assembly comprising elongated sub-jambs each covered with metal and each having a continuous groove extending substantially the entire length of the rear side thereof, said grooves each being adapted to face the main jamb of the sash and having a plurality of bent wire springs receivable by said grooves at all points along said groove, said main jamb also having continuous grooves paralleling the grooves in said sub-jamb and in facing rel-ation therewith also to receive said springs in random placement. said grooves together retaining said springs against visibility and against accident-al displacement.

2. A jamb structure comprising a main jamb and a removable sub-jamb a-ssembiy for placement between a vertically slidable window sash and its frame comprising elongated sub-jambs each having a continuous groove extending subr stantially the entire length of the rear side thereof, said grooves each being adapted to face the main jamb of the sash and having a plurality of bent wire springs receivable by said grooves at all points along said groove, said main jamb also having continuous grooves paralleling the grooves in said sub-jamb and in facing relation therewith also to receive said springs in random placement, said grooves together retaining said springs against visibility and against accidental displacement, said sub-jambs each having a groove along the sidewalls thereof for reception of the ends of the metal covering of said sub-jambs, said metal covering being resiliently flexible and having its edges turned in whereby it may be snapped over said sub-jamb and retained in place by engagement with said grooves, said sub-jamb having a depression at one point therealong into which said metal covering extends, and a screw extending through the base of said depression and through the groove at the rear side of said subjamb for engagement with a main jamb.

WILLIAM H. ROSEWARNE. 

